VertexHigherPtSquared Class Reference

#include <VertexHigherPtSquared.h>

List of all members.

Public Member Functions
bool	operator() (const TransientVertex &v1, const TransientVertex &v2) const
bool	operator() (const reco::Vertex &v1, const reco::Vertex &v2) const
double	sumPtSquared (const reco::Vertex &v) const

---

Detailed Description

operator for sorting TransientVertex objects in decreasing order of the sum of the squared track pT's

Definition at line 13 of file VertexHigherPtSquared.h.

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Member Function Documentation

bool VertexHigherPtSquared::operator()	(	const TransientVertex &	v1,
		const TransientVertex &	v2
	)		const

Definition at line 6 of file VertexHigherPtSquared.cc.

{
  return (sumPtSquared(v1) > sumPtSquared(v2));
}

bool VertexHigherPtSquared::operator()	(	const reco::Vertex &	v1,
		const reco::Vertex &	v2
	)		const

Definition at line 14 of file VertexHigherPtSquared.cc.

{
  return (sumPtSquared(v1) > sumPtSquared(v2));
}

double VertexHigherPtSquared::sumPtSquared

(

const reco::Vertex &

v

)

const

Definition at line 23 of file VertexHigherPtSquared.cc.

References reco::Vertex::tracks_begin(), and reco::Vertex::tracks_end().

{
  double sum = 0.;
  double pT;
  for (Vertex::trackRef_iterator it = v.tracks_begin(); it != v.tracks_end(); it++) {
    pT = (**it).pt();
    double epT=(**it).ptError(); pT=pT>epT ? pT-epT : 0;

    sum += pT*pT;
  }
  return sum;
}